Figure 1
Scheme and beam paths on a multi-analyser diffraction (MAD) filter using nine analyser crystals with a 2° pitch between them; to avoid interception/cutting of the beams coming from the sample by the neighbouring analyser crystals, the maximum length of the analyser crystals l must be small and their spacing i must be relatively large; this is facilitated by the use of a large sample-to-MAD-filter distance D (from Hodeau et al., 1998). |